<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="../reset.css">
    <style>
        ul {
            width: 380px;
            height: 300px;
            margin: 100px auto;
            position: relative;
        }

        li {
            position: absolute;
        }

        li:nth-child(1) {
            z-index: 1;
        }

        .pointer {
            position: absolute;
            z-index: 999;
            bottom: 15px;
            margin-left: 15px;
        }

        .pointer a {
            margin-left: 3px;
            float: left;
            width: 5px;
            height: 5px;
            border: rgba(255,255,255,0) 2px solid;
            background-color: rgba(255,255,255,.3);
            border-radius: 50%;
            background-clip: content-box;
        }

        .pointer a:nth-child(1){
            border: rgba(255,255,255,0.3) 2px solid;

            background-color: rgba(255,255,255,1);
        }
    </style>
</head>
<body>
<ul>
    <li><a href="javascript:;"><img src="../img/jd1.png" alt=""></a></li>
    <li><a href="javascript:;"><img src="../img/jd2.png" alt=""></a></li>
    <li><a href="javascript:;"><img src="../img/jd3.png" alt=""></a></li>
    <div class="pointer">
        <a href="javascript:;"></a>
        <a href="javascript:;"></a>
        <a href="javascript:;"></a>
    </div>
</ul>
</body>
</html>